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Stress granules (SG) and processing bodies (PB) in viral infections

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Malinowska M., Niedźwiedzka-Rystwej P., Tokarz-Deptuła B., Deptuła W.
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2016
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vol. 63
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issue 2
183-188
EN
During reaction to stress caused by viral infection, RNA granules are formed in order to protect mRNA. Stress granules (SG) and processing bodies (PB) provide cell homeostasis and mRNA stability. They are formed, for example, during polio virus and MRV (mammalian orthoreovirus) infections. Some viruses, such as influenza virus and HTLV-1 (Human T-lymphotropic virus 1), block the formation of granules. In addition, there are viruses like West Nile Virus, Hepatitis C Virus (HCV) or human Herpes viruses, which influence the functioning of the granules.
2
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Mechanisms of type I interferon action and its role in infections and diseases transmission in mammals

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Niedźwiedzka-Rystwej P., Tokarz-Deptuła B., Deptuła W.
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2017
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vol. 64
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issue 2
199-205
EN
Interferons (IFNs) are pivotal regulators of immunological processes. This paper describes mainly type I interferons -α and -β and their recently recounted signaling pathways, especially connected with ISGs - interferon stimulated genes, having a crucial role in regulating IFN recruitment. Moreover, the paper shows the data on the role of interferons -α and -β in infections - not only commonly known viral infections, but also bacterial, fungal and parasitic.
3
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Apoptosis of peripheral blood leucocytes in rabbits infected with different strains of rabbit haemorrhagic disease virus

76%
Niedźwiedzka-Rystwej P., Hukowska-Szematowicz B., Tokarz-Deptuła B., Trzeciak-Ryczek A., Działo J., Deptuła W.
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2013
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vol. 60
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issue 1
65-69
EN
The pathogenicity of RHDV (rabbit haemorrhagic disease virus) is mainly associated with its affinity to blood vessels, with causing disseminated intravascular coagulations (DIC), and with the stimulation of the host immune system. Moreover, there are implications suggesting that apoptosis may be a pivotal process in understanding the basis of viral haemorrhagic disease in rabbits - a serious infectious disease causing mortality to wild and domestic rabbits. The aim of this study is to evaluate, by means of flow cytometry, the dynamics of apoptosis in peripheral blood granulocytes and lymphocytes in rabbits experimentally infected with seven different strains of RHDV and so-called antigenic variants of RHDV denominated as RHDVa, i.e.: Hungarian 24V/89, 1447V/96, 72V/2003; Austrian 01-04, 237/04, V-412 and French 05-01. The results showed that all of the RHDV and RHDVa strains cause an increase in the number of apoptotic cells throughout the infection, which might indicate the need for further analysis of the importance of this process.
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